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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 03 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 123735
Prefixes after maximum aggregation: 78403
Unique aggregates announced to Internet: 59310
Total ASes present in the Internet Routing Table: 14920
Origin-only ASes present in the Internet Routing Table: 12927
Origin ASes announcing only one prefix: 5840
Transit ASes present in the Internet Routing Table: 1993
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 21
Number of addresses announced to Internet: 1222507232
Equivalent to 72 /8s, 221 /16s and 250 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 55.0
Total number of prefixes smaller than registry allocations: 58421
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20678
Total APNIC prefixes after maximum aggregation: 12255
Prefixes being announced from the APNIC address blocks: 19143
Unique aggregates announced from the APNIC address blocks: 11895
APNIC Region origin ASes present in the Internet Routing Table: 1760
APNIC Region origin ASes announcing only one prefix: 520
APNIC Region transit ASes present in the Internet Routing Table: 286
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 109175296
Equivalent to 6 /8s, 129 /16s and 226 /24s
Percentage of available APNIC address space announced: 64.7
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 76431
Total ARIN prefixes after maximum aggregation: 48248
Prefixes being announced from the ARIN address blocks: 54691
Unique aggregates announced from the ARIN address blocks: 16673
ARIN Region origin ASes present in the Internet Routing Table: 8277
ARIN Region origin ASes announcing only one prefix: 2791
ARIN Region transit ASes present in the Internet Routing Table: 795
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 189906880
Equivalent to 11 /8s, 81 /16s and 191 /24s
Percentage of available ARIN address space announced: 70.7
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647, 29695 - 30719
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21373
Total RIPE prefixes after maximum aggregation: 15694
Prefixes being announced from the RIPE address blocks: 17879
Unique aggregates announced from the RIPE address blocks: 11918
RIPE Region origin ASes present in the Internet Routing Table: 4479
RIPE Region origin ASes announcing only one prefix: 2444
RIPE Region transit ASes present in the Internet Routing Table: 814
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 128495616
Equivalent to 7 /8s, 168 /16s and 176 /24s
Percentage of available RIPE address space announced: 76.6
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5251
Total LACNIC prefixes after maximum aggregation: 2206
Prefixes being announced from the LACNIC address blocks: 4651
Unique aggregates announced from the LACNIC address blocks: 2955
LACNIC Region origin ASes present in the Internet Routing Table: 330
LACNIC Region origin ASes announcing only one prefix: 85
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 12418304
Equivalent to 0 /8s, 189 /16s and 125 /24s
Percentage of available LACNIC address space announced: 74.0
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1100 1105 804 Telstra Pty Ltd
703 396 367 312 UUNET
2907 381 1976 360 SINET Japan
17557 375 28 141 Pakistan Telecom
2764 318 340 286 connect.com.au pty ltd
4134 315 2826 105 Data Communications Bureau
7474 272 276 208 Optus Communications Pty Ltd
4814 268 79 15 China Telecom (Group)
3786 247 776 214 DACOM Corporation
17676 237 3654 25 XTAGE CORPORATION
4755 230 135 74 Videsh Sanchar Nigam Ltd. Aut
9583 218 33 14 Satyam Infoway Ltd.,
4766 211 2074 158 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 176 226 48 CHINA UNICOM
9238 135 8 17 TATA ISP
4716 130 734 124 TTnet
4739 128 57 117 Commerical Internet eXchange
7539 127 151 122 TANet2, sponsored by NSC, TAI
9498 127 9 10 BHARTI BT INTERNET LTD.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1585 8904 1122 UUNET Technologies, Inc.
7018 1352 7157 938 AT&T
3908 1034 1572 477 Supernet, Inc.
1239 975 3139 689 Sprint
1 772 2846 490 GENUITY
189 706 341 291 Genuity
7132 701 6064 399 Southwestern Bell Internet Se
7843 644 403 174 Adelphia Corp.
4151 597 691 58 USDA
3561 588 2353 339 Cable & Wireless USA
4323 566 491 178 Time Warner Communications, I
852 550 1107 433 Telus Advanced Communications
18566 534 124 7 Covad Communications
209 529 2089 337 Qwest
705 526 192 260 UUNET Technologies, Inc.
2386 505 482 249 AT&T Data Communications Serv
690 502 73 318 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 476 338 196 BellSouth Network Solutions,
6198 451 222 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 784 2221 651 UUNET - Commercial IP service
3215 311 835 174 France Telecom Transpac
3301 311 1174 301 TeliaNet Sweden
3320 267 1996 230 Deutsche Telekom AG
680 232 2053 229 DFN-IP service G-WiN
1257 216 328 190 SWIPnet Swedish IP Network
719 195 307 125 LANLINK autonomous system
5515 195 779 168 Sonera Solution Autonomous Sy
5400 193 77 107 BT Ignite European Backbone
786 180 1874 180 The JANET IP Service
20858 155 17 3 This AS will be used to conne
8708 154 42 150 Romania Data Systems S.A.
3303 145 517 144 Swisscom Ltd
8220 137 215 128 COLT Internet - International
12302 123 18 30 MobiFon S.A.
2856 119 1298 109 BTnet UK Regional network
3269 112 753 62 TELECOM ITALIA
3246 108 384 105 Song Networks
3233 107 11 12 RNC - Romanian Natioanal R&D
3352 106 734 32 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 98 108 ImpSat
7303 241 36 59 Telecom Argentina Stet-France
8151 214 333 115 UniNet S.A. de C.V.
11172 164 66 33 Servicios Alestra S.A de C.V
6503 153 207 107 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
11340 110 3 38 Red Universitaria Nacional
10620 107 7 31 TVCABLE BOGOTA
11992 90 9 36 Integrated Systems
6147 77 62 20 Telefonica Del Peru
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 73 5 21 Chilesat Servicios Empresari
8065 73 6 18 Empresas Publicas de Medellin
15311 71 27 36 Telefonica Empresas
4270 69 18 10 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
11830 63 4 24 Instituto Costarricense de El
13999 62 36 8 Mega Cable S.A. de C.V.
7984 61 11 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1034 557 Supernet, Inc.
4151 597 539 USDA
18566 534 527 Covad Communications
7843 644 470 Adelphia Corp.
189 706 415 Genuity
7018 1352 414 AT&T
4323 566 388 Time Warner Communications, I
7132 701 302 Southwestern Bell Internet Se
1221 1100 296 Telstra Pty Ltd
6347 371 289 SAVVIS Communications Corpora
1239 975 286 Sprint
1 772 282 GENUITY
6197 476 280 BellSouth Network Solutions,
4355 381 279 EarthLink, Inc.
6198 451 276 BellSouth Network Solutions,
705 526 266 UUNET Technologies, Inc.
2386 505 256 AT&T Data Communications Serv
4814 268 253 China Telecom (Group)
3561 588 249 Cable & Wireless USA
27364 266 248 Armstrong Cable Services
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 1239 Sprint
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24 27321 INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:5 /10:8 /11:13 /12:47
/13:92 /14:247 /15:460 /16:7372 /17:1646 /18:2963
/19:8293 /20:8223 /21:5906 /22:8846 /23:10640 /24:68375
/25:175 /26:192 /27:53 /28:33 /29:20 /30:60
/31:0 /32:48
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 646 1034 Supernet, Inc.
189 627 706 Genuity
18566 529 534 Covad Communications
702 487 784 UUNET - Commercial IP service
701 470 1585 UUNET Technologies, Inc.
7018 466 1352 AT&T
690 451 502 Merit Network
7843 391 644 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 374 975 Sprint
6198 358 451 BellSouth Network Solutions,
6197 355 476 BellSouth Network Solutions,
11305 310 333 Interland Incorporated
2386 305 505 AT&T Data Communications Serv
20115 295 422 Charter Communications
6140 281 294 ImpSat
1 276 772 GENUITY
705 273 526 UUNET Technologies, Inc.
22927 273 273 TELEFONICA DE ARGENTINA
27364 259 266 Armstrong Cable Services
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:669 13:1 15:4 17:2 20:10
24:787 25:1 32:86 38:66 40:18 44:2
55:1 57:17 61:463 62:519 63:1951 64:1512
65:1905 66:2334 67:185 68:323 69:71 80:334
81:118 128:150 129:176 130:45 131:83 132:11
133:11 134:135 135:4 136:113 137:112 138:105
139:66 140:147 141:87 142:92 143:48 144:103
145:16 146:268 147:90 148:278 149:74 150:43
151:66 152:247 153:52 154:2 155:111 156:46
157:44 158:124 159:140 160:33 161:62 162:130
163:79 164:307 165:144 166:74 167:324 168:387
169:56 170:313 171:6 192:5344 193:2402 194:1991
195:993 196:478 198:3556 199:3298 200:2885 202:3675
203:5042 204:3056 205:2017 206:2379 207:2395 208:2672
209:2890 210:736 211:334 212:984 213:777 214:20
215:21 216:3269 217:623 218:83 219:11 220:59
End of report
